A system and method for coordinated manipulation of multiple displayed maps, even when the maps use different internal coordinate systems. According to this embodiment, each map image to be displayed is first georeferenced, to provide a set of conversion functions between each map's internal coordinate...http://www.google.de/patents/US7161604?utm_source=gb-gplus-sharePatent US7161604 - System and method for synchronizing raster and vector map images
